Science Sunday!
It seems to me that a lot of folks I know are interested in the computers of the space program. Especially the Apollo Guidance Computer.
Well, here you go: from the National Museum of Computing, “Light Years Ahead: The 1969 Apollo Guidance Computer”. Bonus points: the presenter, Robert Wills, is (or at least was as of October 2019) a Cisco employee.
Bonus video: “Common Misconceptions in Aerodynamics”, a presentation to University of Michigan engineering students by Doug McLean, a retired Boeing Technical Fellow.